First day before the development of colds. If your body has already penetrated the infection, you overcooled or else in some other way the body's defenses weakened and caused a reaction, it is usually accompanied by mucus symptom can be delayed, for example, on the following day.
Polyps. Mucosal proliferation and formation of such objects in the nasopharynx can occur gradually: wherein rhinitis usually either completely absent or is expressed very slightly.
Adenoids. Enlarged adenoids due to their infection does not lead to the common cold: a strong stuffy nose and partially blocked vozduhotok throat.
Allergic reactions. Allergic reactions are inherently abnormal and may manifest as a strong discharge of mucus from the nose and nasal blockage of normal and sinuses.
Dehydration of the mucosa. Another frequent cause nasal congestion, mucous overdrying is inside the organ due to the high concentration of exhaust gases, smoke, certain groups of compounds, dust and even the use of alcoholic beverages.
A side effect of medication. Some drugs, particularly nasal administration, can cause a reaction in the form of nasal congestion.
Vasomotor rhinitis. Disorders of the nervous system and reflex functions of natural exchange mechanisms in the nasopharynx usually leads to a violent reaction of the nasal mucosa, including a complete blockade of vozduhotoka nasal passages.